PLS HELP ME. Its due soon Sometimes more than one system is grouped as one. What is a direct result of this?

The boundary increases
The components increase
The boundary increases as well as the components

What mistake did john needham make that caused him to conclude that spontaneous generation for microorganisms occurred? a. he re-contaminated his boiled broth solutions. b. he destroyed the vital force in the solutions. c. he did not boil his broth solutions, only warmed them. d. he failed to seal his flasks of boiled broth. e. he allowed his assistant to conduct the experiment which he did not monitor closely.